you refer to for instance those US Postal service LLV's that do 10 miles to the gallon (converts to 4.3 km per liter)? https://www.reddit.com/r/todayilearned/c

you refer to for instance those US Postal service LLV's that do 10 miles to the gallon (converts to 4.3 km per liter)? https://www.reddit.com/r/todayilearned/comments/3xqc4m/til_the_main_vehicle_for_the_us_postal_service/ https://www.reddit.com/r/todayilearned/comments/3xqc4m/til_t...